Finding the Fourth Proportional to 1,129,494.36, 1,558,842.66 and 645,992.40
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Solution
The fourth proportional to 1,129,494.36, 1,558,842.66 and 645,992.40 is: 891,549.84
Step by Step Solution
- Step 1: Write the proportion equation
1,129,494.36 : 1,558,842.66 = 645,992.40 : x - Step 2: Convert to fraction form
1,129,494.36/1,558,842.66 = 645,992.40/x - Step 3: Cross multiply
1,129,494.36x = 1,558,842.66 × 645,992.40 - Step 4: Simplify right side
1,129,494.36x = 1,007,000,511,155.78 - Step 5: Solve for x
x = 1,007,000,511,155.78/1,129,494.36 - Step 6: Final answer
x = 891,549.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.